How to find difference between two dates in Qlik script?

The solution is here

fabs(Date(Field1,'DD/MM/YYYY')) - fabs(Date(Field2,'DD/MM/YYYY'))

For ex:

LOAD

    orderDate,

    desDate,

    delDate,

    fabs(Date(desDate,'DD/MM/YYYY')) - fabs(Date(orderDate,'DD/MM/YYYY')) as orderDespatchGap,

    fabs(Date(delDate,'DD/MM/YYYY')) - fabs(Date(orderDate,'DD/MM/YYYY')) as leadTime,

    fabs(Date(delDate,'DD/MM/YYYY')) - fabs(Date(desDate,'DD/MM/YYYY')) as despatchDeliveryGap

FROM [<DATA LOCATION>]